How does [table] work?

I'm trying to create tables. Are they documented somewhere?

 

I thought the first table should have 2 columns and the second should have 4 columns!

# Poster	SP1
1 blazsovszkyc	14
14 Epitome990	4
17 Gilbertsson	3

# Poster _ _

1 blazsovszkyc

2 tolbuck

17 augiechen7

 

I figured it out. No leading \ and no | at the end of lines.

# Poster	SP
1 blazsovszkyc	14
14 Epitome990	4
17 Gilbertsson	3

# Poster _ _	Cups	Tot	SP2 SP1
1 blazsovszkyc	2	26	12 14
2 tolbuck	0	16	9 7
17 augiechen7	0	7	7